Harness control



Jul 4, 1939.

- E. MESSER 2,165,000

HARNESS CONTROL Filed Sept. 1, 193B 3 Sheets-Sheet l July 4, 1939.

E. MESSER 2,165,000

HARNESS CONTROL Filed Sept. 1, 1938 3 Sheets-Sheet 2 1 vue/w ton Eda/@712 fleas-er July 4, 1939. MESSER 2,165,000

' HARNESS CONTROL Filed Sept. 1, 1938 3 SheetsSheet s Patented July 4, 1939 UNITED STATES PATENT OFFICE Cannon Mills Company, Kannapolis,

corporation of North Carolina Application September 1, 1938, Serial No. 228,065

1 Claim.

This invention relates to a new and improved harness control for looms and is designed particularly for plain or cam looms for weaving plain toweling.

An object of the invention is to provide a simplified means controlling the harness action, whereby the weft may be floated through the shedding of the warp as many times as desired and thereby produce a floated thread design in the toweling.

A still further object of the invention is to provide a simplified construction in which clutch control cams are utilized for operating the harness frames and the clutch is under the control of a pattern chain.

With the above objects in view and others which will appear hereinafter, the invention includes the arrangement and combination of parts hereinafter more fully described and shown in the accompanying drawings in which:

Fig. 1 is a side elevation, partly broken away and with portions of the plain loom omitted for greater clarity illustrating the invention;

Fig. 2 is a plan view of the harness cam control illustrating also the controlling clutch therefor;

Fig. 3 is a cross sectional view taken through the clutch and harness controlling cams; and

Fig. 4 is a cross sectional view taken on the section line 4-4 of Fig. 3.

In the drawings, in which similar reference characters represent like parts, the ground warp beam is shown at 5 with the usual whip roll at 6. The ground warp G from the beam 5 passing over the whip roll 6 is divided between the rear harness frame I and the front harness frame 8. The harness frames 1 and 8 are connected together by the straps 9 which extend over the rollers l0, mounted on an oscillatable shaft ll supported by the fixed bearings l2 provided on the loom frame.

The loom is provided with the usual on which a pinion I4 is mounted which meshes with the idler pinion |5 mounted on the stud shaft |6 secured to the loom frame at any suitable position. The idler pinion |5 meshes with the gear H which is fixed to the tubular shaft |8 rotatably mounted upon the shaft H! which is mounted in suitable bearings mounted in the loom frame. Also secured fixedly to the tubular shaft I8 is a collar 20 having enlarged portions 2| and 22 at its ends. The enlarged portion 22 is provided with diametrically opposed slots 23 into which extend the lugs 24 of a sleeve member 25 slidably mounted upon the collar 20 beshaft |3 tween the enlarged portions 2| and 22. The sleeve member 25 is provided with a groove 26 in which engages the forked end 21 of the lever 28.

The lever 28 has a screw threaded end 29 which 5 threads into the socket member 30 which is pivoted to the pin 3| provided upon the loom frame. A spring 32 engages with one end the lever 28 and the other end is secured to a fixed point, the bolt 33. The spring 32 normally tends 10 to hold the lever and consequently the sleeve 25 in their left hand position as shown in Fig. 2.

Rotatably mounted upon the tubular shaft |8 between the collar 20 and the gear ll are the harness control cams 34 and 35. The integrally connected by the hub portion 36 and each cam is provided with three single pick points positioned oppositely to one another as shown clearly in Figure 4.

The hub 36 is provided with a collar 31 on the 20 end nearest to the gear H. The collar 31 is provided with six equidistantly spaced arc-shaped depressions 38 with which a brake roller 39 is designed to cooperate. The brake roller 39 is rotatably mounted by the pin 40 on the lever 4| 25 which is at one end screw threaded in to a. socket member 42 which in turn is pivotally mounted upon the stud shaft 43 which is fixed in the bearing 44 upon the loom frame by means of the previously mentioned bolt 33. tion 42 is held on the shaft 43 between the collars 45.

The other end of the lever 4| is provided with a notch 46 with which engages a wire 41 which in turn is secured to the spring 48 and the other end of the spring 48 is secured to a fixed point on the loom frame. The construction outlined maintains the roller 39 in contact with the collar 31 at all times.

The other end of the hub 36 opposite the collar 31 is provided with a collar 49 in which are provided six equidistantly spaced apertures 50 designed to receive the lugs 24 of the sleeve member 25 and thereby operate the cams 34 and 35 with the collar 20 since the lugs 24 are always in engagement with the apertures 23 provided on the collar 22.

The points on the cams 34 and 35 cooperate with the treadle rollers 5| provided on the treadle levers 52 which are pivoted at 53 to the loom frame. The free ends of the treadles are connected to the straps 54' which in turn are connected to the harness frames 1 and 8 in the usual manner.

The gear I1 is generally provided with sixty- 55 cams are 15 The socket por- 30 three teeth and is driven by a twenty-one tooth pinion gear l5 which is of the same size as the pinion 14. When the cams 34 and are connected by the clutch mechanism above described to the collar 20, such cams are driven regularly by the gear I! and the harness frames 1 and 8 are alternately moved upwardly and downwardly for their single pick. However, when it is desired to float the weft through for several throws the control mechanism for the clutch as described below is used.

The pattern chain rack is shown at in Fig. 1 and the high ball lever is indicated at 55. Connected to the high ball lever is a rod 51 which engages one arm of the bell crank lever 58 pivotally secured to the loom frame by pin 59. The other arm of the bell crank lever 58 has pivotally secured thereto a rod which at its other end 6| engages the lever 28 so as to swing the lever 28 when operated by a high ball on the pattern chain to the right from the position shown in Fig. 2.

It is believed that the operation of the harness. cams 34 and 35 is obvious from the construction described. Whenever the rod 51 is elevated by a high ball on the pattern chain, the rod 60 shown at Fig. 2 is moved in the direction of the arrow and the sleeve 25 is moved to the right from the position shown in Fig. 2 thereby withdrawing the lugs 24 from the apertures 50 in the collar 49. Upon withdrawal of the lugs. 24 from the apertures 50, the cams 34 and 35 will be held in fixed position due to the brake roller 39. During such time, the weft will be floated back and forth through the shedding and the floated thread design will be produced in the toweling. The arc shaped recesses 38 provided in the collar 31 are positioned in alignment with the recesses 50 in order that withdrawal and reentry of the lugs 24 may be accomplished at any time.

I claim:

A harness control for a plain loom comprising a shaft, a tubular shaft rotatably mounted on said shaft, a gear fixed to said tubular shaft rotated by a moving part of the loom, a pair of cams actuating the harness frames freely rotatable on said tubular shaft, a collar fixed to said tubular shaft, a slidable sleeve non-rotatably mounted on L said collar, said cams having spaced recesses, lugs on said sleeve for engaging said recesses to rotate said cams with said gear, means for aligning said recesses with said lugs and means for withdrawing said lugs from said recesses in order to hold said cams stationary while floated threads are woven in the cloth.

EDWARD MESSER. 

